Zip Lining Fun

Head for forests in Alaska, Hawaii, and Utah for a quick ride between treetops.

You need a couple of stout trees, a steel rope, and a devil-may-care vacationer. Zip lining—sliding between treetops while harnessed to a pulley on a cable—got its start in Costa Rica's rain forests, then spread northward.

A few spots, such as Oregon's Mount Hood Skibowl (www.skibowl.com), offer low-key summer zips. But the serious fun is in forests from Alaska to Hawaii. Screaming is encouraged.